Patents by Inventor Sandeep Rao

Sandeep Rao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150247728
    Abstract: An automobile has a system for navigating using a vehicle speed sensor reading rotation data from a wheel and a gyroscopic sensor. For each of a plurality of error parameter values, a distance traveled for each of a plurality of directions of travel. The system also includes selecting the error parameter value that maximizes the distance traveled in one or more of the directions of travel, applying the selected error parameter value to data from the gyroscopic sensor, and navigating using dead reckoning based on data from the vehicle speed sensor and data from the gyroscopic sensor with the applied error parameter value.
    Type: Application
    Filed: May 14, 2015
    Publication date: September 3, 2015
    Inventors: Sandeep RAO, Deric Wayne WATERS
  • Publication number: 20150219768
    Abstract: Embodiments of the disclosure provide a cross coupled position engine architecture for sensor integration in a Global Navigation Satellite System. In one embodiment, a data processing engine for processing inertial sensor data within a positioning system receiver is disclosed. The data processing engine includes a first input for receiving the sensor data, and a second input for receiving a positioning data. The data processing system also includes a memory and a processor. The processor of the data processing system is coupled to the memory and to the first and second input. The processor of the data processing system is configured to calculate a net acceleration profile data from the inertial sensor data and from the positioning data. The net acceleration profile data calculated by the processor of the data processing system is used for the Global Positioning System (GPS) receiver to subsequently calculate a position and a velocity data.
    Type: Application
    Filed: April 14, 2015
    Publication date: August 6, 2015
    Inventors: Goutam Dutta, Tarkesh Pande, Sandeep Rao, Deric W. Waters
  • Publication number: 20150185316
    Abstract: A radar apparatus for estimating position of a plurality of obstacles. The radar apparatus includes a receive antenna unit. The receive antenna unit includes a linear array of antennas and an additional antenna at a predefined offset from at least one antenna in the linear array of antennas. The radar apparatus also includes a signal processing unit. The signal processing unit estimates an azimuth frequency associated with each obstacle of the plurality of obstacles from a signal received from the plurality of obstacles at the linear array of antennas. In addition, the signal processing unit estimates an azimuth angle and an elevation angle associated with each obstacle from the estimated azimuth frequency associated with each obstacle.
    Type: Application
    Filed: July 11, 2014
    Publication date: July 2, 2015
    Inventors: Sandeep Rao, Saurabh Khanna
  • Patent number: 9069073
    Abstract: Methods and integrated circuits for performing receiver autonomous integrity monitoring (RAIM) in global navigation satellite system (GNSS) receivers are disclosed. In an embodiment, a first information comprising current position related information is accessed. A second information comprising predicted position related information is accessed based on previously received information. A solution is computed based on the first information and the second information and a presence of outlier information is determined in at least one of the first information and the second information based on the solution.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: June 30, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sthanunathan Ramakrishnan, Sandeep Rao
  • Patent number: 9057615
    Abstract: A method for navigating using a speed sensor and a yaw rate sensor includes computing, for each of a plurality of error parameter values, a distance traveled for each of a plurality of directions of travel. The method also includes selecting the error parameter value that maximizes the distance traveled in one or more of the directions of travel, applying the selected error parameter value to data from the yaw rate sensor, and navigating using dead reckoning based on data from the speed sensor and data from the yaw rate sensor with the applied error parameter value.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: June 16, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sandeep Rao, Deric Wayne Waters
  • Patent number: 9030356
    Abstract: Embodiments of the disclosure provide a cross coupled position engine architecture for sensor integration in a Global Navigation Satellite System. In one embodiment, a data processing engine for processing inertial sensor data within a positioning system receiver is disclosed. The data processing engine includes a first input for receiving the sensor data, and a second input for receiving a positioning data. The data processing system also includes a memory and a processor. The processor of the data processing system is coupled to the memory and to the first and second input. The processor of the data processing system is configured to calculate a net acceleration profile data from the inertial sensor data and from the positioning data. The net acceleration profile data calculated by the processor of the data processing system is used for the Global Positioning System (GPS) receiver to subsequently calculate a position and a velocity data.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: May 12, 2015
    Assignee: Texas Instruments Incorporated
    Inventors: Goutam Dutta, Tarkesh Pande, Sandeep Rao, Deric W. Waters
  • Publication number: 20150017939
    Abstract: Embodiments of the invention provide a method for detecting false peaks in a Global Navigation Satellite System (GNSS) having a power control circuit, a measurement engine, and position engine. An estimated pseudorange is filtered over time. A false peak is declared if the filtered pseudorange error is greater than a threshold.
    Type: Application
    Filed: October 3, 2014
    Publication date: January 15, 2015
    Inventors: Deric Wayne Waters, Sandeep Rao, Karthik Ramasubramanian
  • Patent number: 8935597
    Abstract: An electronic circuit (2250) for a satellite receiver (100, 2200). The electronic circuit (2250) includes a correlator circuit (2310) operable to supply a data signal including ephemeris data and a subsequent satellite time datum, and a data processor (2370, 2380) operable to infer satellite time TS from as few as one of the ephemeris data prior to the satellite time datum. Other circuits, devices, receivers, systems, processes of operation and processes of manufacture are also disclosed.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: January 13, 2015
    Assignee: Texas Instruments Incorporated
    Inventors: Sandeep Rao, Jawaharlal Tangudu, Karthik Ramasubramanian
  • Patent number: 8930136
    Abstract: A personal navigation device configured to determine heading readings continuously using data from a sensor in the personal navigation device. Heading readings are selected corresponding to a periodic event. A representative heading is determined from the selected heading readings. When a portion of the selected heading readings has a value within a range of the representative heading, a static heading indicator is asserted to indicate the personal navigation device is moving in a static heading. The static heading indicator may be used to smooth an estimated trajectory of the personal navigation device.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: January 6, 2015
    Assignee: Texas Instruments Incorporated
    Inventors: Tarkesh Pande, Jaiganesh Balakrishnan, Deric Waters, Goutam Dutta, Jayawardan Janardhanan, Sthanunathan Ramakrishnan, Sandeep Rao, Karthik Ramasubramanian
  • Patent number: 8825397
    Abstract: A vehicle navigation system includes a GNSS position engine (GPE) that uses GNSS satellite measurements to compute a first position and velocity of a vehicle and a first quality metric associated with the position and velocity. The system also includes a dead reckoning engine (DRE) that operates parallel with the GPE that computes a second position and velocity and a second quality metric associated with the dead reckoning. The GPE is configured to use the second position and velocity to detect a set of outliers in an incoming GNSS measurement; use the second position and velocity as an initial estimate of its position and velocity for a particular time instant, which is then refined by GNSS measurements received at that particular time instant; and to replace the first position and velocity with the second position and velocity.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: September 2, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Sandeep Kasargod, Sandeep Rao, Karthik Ramasubramanian, Tarkesh Pande, Sriram Murali
  • Patent number: 8806572
    Abstract: Systems, methods, and other embodiments associated with authentication via monitoring are described. One example method includes detecting a data flow in which indicia of identity (DFWIOI) travel between a first endpoint and a second endpoint. The DFWIOI may be partially encrypted. The example method may also include collecting an identity data associated with the DFWIOI from the DFWIOI, the first endpoint, the second endpoint, and so on. The example method may also include making an authentication policy decision regarding the DFWIOI based, at least in part, on the identity data. The example method may also include controlling a networking device associated with the DFWIOI based, at least in part, on the authentication policy decision.
    Type: Grant
    Filed: May 30, 2009
    Date of Patent: August 12, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: David A. McGrew, Sandeep Rao
  • Patent number: 8773304
    Abstract: A method and an integrated circuit to improve sensitivity of decoding time of a GNSS receiver are disclosed. A plurality of estimates of states of an encoder for one or more instances of a time counter is maintained. A signal comprising a plurality of data bits corresponding to an instance of the time counter is detected and at least one augmented state for each estimate of states of the encoder is determined. A corresponding augmented state for successive instances of the time counter is predicted and an augmented branch metric for each of the at least one augmented state is computed. A path metric for the each estimate is updated based on the augmented branch metric for each of the at least one augmented state and a time counter value is determined based on the path metric for the each estimate.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: July 8, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Sandeep Rao, Jaiganesh Balakrishnan, Sthanunathan Ramakrishnan
  • Publication number: 20140159950
    Abstract: A Global Navigation Satellite System (GNSS) receiver determines a measurement error covariance from a reference position and a set of measured pseudoranges from a set of GNSS satellites. The position and velocity solution is determined from the measurement error covariance and the set of measured pseudoranges. The measurement error covariance is determined as function of the difference between a reference pseudorange and measured pseudorange. The reference pseudorange is computed from the reference position to a satellite. The measurement error covariance is determined as function of the difference only if the measured pseudorange is greater than the reference pseudorange. The GNSS receiver also determines measurement error covariance as function of one or more of correlation peak shape, difference, the correlation peak shape, a received signal to noise ratio and a tracking loop error.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 12, 2014
    Applicant: Texas Instruments Incorporated
    Inventors: Atul Deshpande, Sthanunathan Ramakrishnan, Sandeep Rao
  • Publication number: 20140121962
    Abstract: A method for navigating using a speed sensor and a yaw rate sensor includes computing, for each of a plurality of error parameter values, a distance traveled for each of a plurality of directions of travel. The method also includes selecting the error parameter value that maximizes the distance traveled in one or more of the directions of travel, applying the selected error parameter value to data from the yaw rate sensor, and navigating using dead reckoning based on data from the speed sensor and data from the yaw rate sensor with the applied error parameter value.
    Type: Application
    Filed: October 26, 2012
    Publication date: May 1, 2014
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sandeep RAO, Deric Wayne WATERS
  • Publication number: 20140005355
    Abstract: The present invention discloses a process for the preparation of Caspofungin and its intermediates from Pneumocandin B0.
    Type: Application
    Filed: February 18, 2011
    Publication date: January 2, 2014
    Applicant: BIOCON LIMITED
    Inventors: Kiran Kumar Kothakonda, Sandeep Rao Sripathi, Srinivas Pullela Venkata, Lijo George, Anegondi Sreenivasa Prasad
  • Patent number: 8593343
    Abstract: Embodiments of the invention provide a method of adjusting a bandwidth of receivers. A plurality of outputs from a correlator engine are combined. User dynamics are sensed. Bandwidth of one or more receivers are adjusted. By detecting when the user is stationary, the Doppler frequency estimation can be corrected or the SNR can be boosted more both of which lead to improved performance. The embodiments allow a receiver to process signals in when the signal level would otherwise be too low—for example indoors. The embodiments can improve performance when one or more satellites are temporarily blocked but one or more satellites are still being tracked.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: November 26, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Deric W. Waters, June Chul Roh, Sandeep Rao
  • Publication number: 20130154879
    Abstract: Methods and integrated circuits for performing receiver autonomous integrity monitoring (RAIM) in global navigation satellite system (GNSS) receivers are disclosed. In an embodiment, a first information comprising current position related information is accessed. A second information comprising predicted position related information is accessed based on previously received information. A solution is computed based on the first information and the second information and a presence of outlier information is determined in at least one of the first information and the second information based on the solution.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 20, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Sthanunathan Ramakrishnan, Sandeep Rao
  • Publication number: 20130158857
    Abstract: Methods and systems for power and performance optimization are disclosed. In an embodiment, a method of power and performance optimization may include or comprise determining an environment condition of at least one of a current location and one or more intermediate locations along a route of a navigation system based on an environment information. The method also includes or comprises configuring one or more features associated with power and performance optimization in a navigation receiver associated with the navigation system based on the determined environment condition.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 20, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Goutam Dutta, Sandeep Rao
  • Patent number: 8441398
    Abstract: An electronic circuit for a satellite receiver. The electronic circuit includes a correlator circuit operable to supply a data signal including ephemeris data and a subsequent satellite time datum, and a data processor operable to infer satellite time TS from as few as one of the ephemeris data prior to the satellite time datum. Other circuits, devices, receivers, systems, processes of operation and processes of manufacture are also disclosed.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: May 14, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Sandeep Rao, Jawaharlal Tangudu, Karthik Ramasubramanian
  • Publication number: 20130090881
    Abstract: A system (10) for pedestrian use includes an accelerometer (110) having multiple electronic sensors; an electronic circuit (100) operable to generate a signal stream representing magnitude of overall acceleration sensed by the accelerometer (110), and to electronically correlate a sliding window (520) of the signal stream with itself to produce peaks at least some of which represent walking steps, and further operable to electronically execute a periodicity check (540) to compare different step periods for similarity, and if sufficiently similar then to update (560) a portion of the circuit substantially representing a walking-step count; and an electronic display (190) responsive to the electronic circuit (100) to display information at least in part based on the step count. Other systems, electronic circuits and processes are disclosed.
    Type: Application
    Filed: November 22, 2011
    Publication date: April 11, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Jayawardan Janardhanan, Sandeep Rao, Goutam Dutta